Pentagonal Pyramid Calculator

A pentagonal pyramid has a regular pentagon base and five triangular lateral faces. The pentagon contains the golden ratio φ in its geometry.

Key Properties:

• 6 faces: 1 pentagonal base + 5 triangular faces
• 10 edges: 5 base edges + 5 lateral edges
• 6 vertices: 5 base corners + 1 apex
• Interior angle of regular pentagon: 108°
• Golden ratio appears: diagonal/side = φ ≈ 1.618